138194978740

Names of 138194978740

• Cardinal: 138194978740 can be written as One hundred thirty-eight billion, one hundred ninety-four million, nine hundred seventy-eight thousand, seven hundred forty.

Scientific notation

• Scientific notation: 1.3819497874 × 10¹¹

Factors of 138194978740

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 3280

Divisors of 138194978740

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 10 13 14 20 26 28 31 35 52 62 65 70 91 124 130 140 155 182 217 260 310 364 403 434 455 620 806 868 910 1085 1229 1612 1820 1993 2015 2170 2458 2821 3986 4030 4340 4916 5642 6145 7972 8060 8603 9965 11284 12290 13951 14105 15977 17206 19930 24580 25909 27902 28210 31954 34412 38099 39860 43015 51818 55804 56420 61783 63908 69755 76198 79885 86030 103636 111839 123566 129545 139510 152396 159770 172060 181363 190495 223678 247132 259090 266693 279020 308915 319540 362726 380990 432481 447356 495287 518180 533386 559195 617830 725452 761980 803179 864962 906815 990574 1066772 1118390 1235660 1333465 1606358 1729924 1813630 1981148 2162405 2236780 2449397 2476435 2666930 3212716 3467009 3627260 4015895 4324810 4898794 4952870 5333860 5622253 6934018 8031790 8649620 9797588 9905740 11244506 12246985 13868036 16063580 17145779 17335045 22489012 24493970 28111265 31842161 34291558 34670090 48987940 56222530 63684322 68583116 69340180 75931307 85728895 112445060 127368644 151862614 159210805 171457790 222895127 303725228 318421610 342915580 379656535 445790254 531519149 636843220 759313070 891580508 987106991 1063038298 1114475635 1518626140 1974213982 2126076596 2228951270 2657595745 3948427964 4457902540 4935534955 5315191490 6909748937 9871069910 10630382980 13819497874 19742139820 27638995748 34548744685 69097489370 138194978740
• Sum of all divisors σ(n): 369187983360
• Sum of proper divisors (its aliquot sum) s(n): 230993004620
• 138194978740 is an abundant number, because the sum of its proper divisors (230993004620) is greater than itself. Its abundance is 92798025880

Bases of 138194978740

• Binary: 10000000101101000100000000011110110100₂
• Hexadecimal: 0x202D1007B4
• Base-36: 1RHHQ01G

Squares and roots of 138194978740

• 138194978740 squared (138194978740²) is 19097852148949051987600
• 138194978740 cubed (138194978740³) is 2639227271703677552769536743624000
• The square root of 138194978740 is 371745.8523507695
• The cube root of 138194978740 is 5170.0818793643

Scales and comparisons

• 138,194,978,740 seconds is equal to 4,394 years, 8 weeks, 6 days, 22 hours, 5 minutes, 40 seconds.
• To count from 1 to 138,194,978,740 would take you about eight thousand, seven hundred eighty-eight years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 138194978740 cubic inches would be around 430.8 feet tall.

Recreational maths with 138194978740

• 138194978740 backwards is 047879491831
• The number of decimal digits it has is: 12
• The sum of 138194978740's digits is 61
• More coming soon!